Solar water heater for guiding solar energy to water storage tank by utilizing energy transfer medium

Abstract

The invention relates to a solar water heater for guiding solar energy to a water storage tank by utilizing an energy transfer medium, which comprises a water storage tank, a solar light collecting plate used for absorbing sunlight or sunlight heat, and an energy transfer device used for absorbing solar energy and conducting the solar energy to cold water in the water storage tank, wherein one end of the energy transfer device contacts with the solar light collecting plate, and the end thereof is arranged in the water storage tank; the energy transfer device directly heats the cold water in the water storage tank after absorbing the solar energy, and the cold water to be heated does not need to be transferred to the outside of the body of the water storage tank along a pipeline; the energy transfer device is a liquid metal heat transfer device or an optical waveguide and optical fiber heat transfer device or a heat pipe heat transfer device. The solar water heater is easy to install at the position of the window of a random floor, a wall and the like; the operation and the maintenance of the solar water heater are not limited by the resident floor, and the application range is wider; the solar water heater has high heating rate of the cold water, high reliability, no frost crack problem and convenient installation and maintenance, thereby having large-scale popularization and application values.

Description

technical field [0001] The present invention relates to a solar water heater, in particular to an external energy transmission medium such as a liquid metal heat transfer system, an optical waveguide optical fiber light transmission system, or even a heat pipe heat transfer system, to quickly transmit absorbed solar energy into a water storage tank so as to A solar water heater that efficiently heats water to rapidly raise water temperature uses an energy transfer medium to direct the sun's energy to a storage tank. Background technique [0002] Sunlight is the most basic renewable energy source. The energy that sunlight reaches the earth's surface through the atmosphere is a huge and clean natural energy source. The total energy reaching the earth with solar radiation is approximately equivalent to 30 trillion tons of standard coal every year. Because of this, research on solar energy utilization has never stopped in the scientific and industrial circles, especially at pr...

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Problems solved by technology

[0004] Traditional solar water heaters generally have a large volume, and the scope of use is mostly limited to the roof. The fixing method of each part of the system is relatively rigid and inconvenient to maintain. In winter, due to the long transmission path of the pipeline, the pipeline exposed to cold weather along the way The water inside is easy to freeze and then cause the pipe to freeze and crack; moreover, due to the low thermal conductivity of the heated water, when it flows through the heat collecting tube, although it is heated by sunlight, its temperature rise is very limited

When low-rise residents use water heaters, because the cold water delivery path is too long, the heat is easily lost along the way, which is extremely inconvenient to use and the efficiency is particularly low

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